Nice shot!Btw, it looks nearly identical to MY board (from an official distributor, came with box and stickers), which in turn looks nearly identical to the model on this page. But they all differ in some details, e.g. the "501K" component below the USB port is different in the three models. Mine also has some microscopic number written on the rear, upper right corner, which could be the key explaining the difference, but I don't have a magnifying glass at hand.

Upon careful inspection, that is about the only difference. Thanks for the 'shot' comment. My project (I've called it DEBE(does everything but eat)) is an interface to a Canon DSLR and strobes. DEBE can now: 1. Detect sound and fire strobes, & trigger camera simultaneously. 2. Detect sound and trigger camera and add delay for strobe (those pictures of a glass shattering). 3. Detect presence and fire, trigger using the ultrasonic transceiver. 4. Interval fire camera (timed sequence shots, like a plant growing or a season changing). 5. Fire camera and flash by proximity with a 'mass detector' 6. Fire camera and flash by magnetic reed switch (photograph moving objects that I've tagged with a magnet)

I have used the Arduino Protoshields as Radio Shack was carrying them, now they are on clearance as they move to lower their image even further.

Amazing. I own an entry level Nikon DSLR (D3100) with wired remote only, so my options are probably limited unless I find (and understand) the schematics, but I can see the potential of using strobes and delays.